Abstract
In recent years, the application of unmanned aerial vehicle (UAV) remote sensing in grassland ecosystem monitoring has increased, and the application directions have diversified. However, there have been few research reviews specifically for grassland ecosystems at present. Therefore, it is necessary to systematically and comprehensively summarize the application of UAV remote sensing in grassland ecosystem monitoring. In this paper, we first analyzed the application trend of UAV remote sensing in grassland ecosystem monitoring and introduced common UAV platforms and remote sensing sensors. Then, the application scenarios of UAV remote sensing in grassland ecosystem monitoring were reviewed from five aspects: grassland vegetation monitoring, grassland animal surveys, soil physical and chemical monitoring, grassland degradation monitoring and environmental disturbance monitoring. Finally, the current limitations and future development directions were summarized. The results will be helpful to improve the understanding of the application scenarios of UAV remote sensing in grassland ecosystem monitoring and to provide a scientific reference for ecological remote sensing research.
Highlights
Grassland ecosystems are an important part of terrestrial ecosystems, and accurate monitoring of grassland resources is an important foundation for regional grassland management and sustainable development [1,2,3]
We systematically reviewed the application scenarios of unmanned aerial vehicle (UAV) remote sensing in grassland ecosystem monitoring from five aspects: grassland vegetation monitoring, grassland animal investigation, soil physical and chemical monitoring, grassland degradation monitoring and environmental disturbance monitoring
Based on relevant research at home and abroad, we reviewed the application scenarios of UAV remote sensing in grassland ecosystem monitoring from five aspects: grassland vegetation monitoring, grassland animal surveys, soil physical and chemical monitoring, grassland degradation monitoring and environmental disturbance monitoring
Summary
Grassland ecosystems are an important part of terrestrial ecosystems, and accurate monitoring of grassland resources is an important foundation for regional grassland management and sustainable development [1,2,3]. UAVs equipped with remote sensing sensors and combined with positioning technology can acquire remote sensing, high-definition images of a large area, and their spatial resolution can be accurate to centimeters or even millimeters [10]. UAV remote sensing has been increasingly applied to grassland ecosystem monitoring, but few studies have reviewed its application progress [17]. This study aimed to systematically summarize the application progress of UAV remote sensing in grassland ecosystem monitoring, hoping to provide a scientific reference for ecological remote sensing research. This research first analyzed the development trend of UAV remote sensing in grassland ecosystem monitoring and examined common UAV platforms and carried remote sensing sensors.
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